Calculation of the Hadronic Vacuum Polarization Contribution to the Muon Anomalous Magnetic Moment
Calculation of the Hadronic Vacuum Polarization Contribution to the Muon Anomalous Magnetic Moment
复制标题
DOI：
10.1103/physrevlett.121.022003
复制
发表时间：
2018-07-12
影响因子：
8.6
通讯作者：
Tsang, J. T.
中科院分区：
文献类型：
--
作者：
Blum, T.;Boyle, P. A.;Tsang, J. T.
本文用第一性原理格点QCD方法计算了物理π质量下的强子真空极化对μ子反常磁矩的贡献。包括QED和强同位旋破缺效应在内的上夸克、下夸克、奇异夸克和魅夸克的总贡献为a（mu）（HVP LO）= 715.4（18.7）x 10（-10）。通过用R比数据补充非常短和长距离的晶格数据，我们将精度显著提高到a（mu）（HVP LO）= 692.5（2.7）x 10（-10）。这是目前最精确的a（mu）（HVP LO）测定方法。
We present a first-principles lattice QCD thorn QED calculation at physical pion mass of the leading-order hadronic vacuum polarization contribution to the muon anomalous magnetic moment. The total contribution of up, down, strange, and charm quarks including QED and strong isospin breaking effects is a(mu)(HVP LO) = 715.4(18.7) x 10(-10). By supplementing lattice data for very short and long distances with R-ratio data, we significantly improve the precision to a(mu)(HVP LO) = 692.5(2.7) x 10(-10). This is the currently most precise determination of a(mu)(HVP LO).